(as of December 2018)
JAL (Japan Airlines) is the only one airline company which operates flights from Haneda (Tokyo) to Nanki-Shirahama airport three round trips a day. 75 minutes, reference price 17,190JPY. The official site of JAL
You should take a bus to Yunomine Onsen at Kii-Tanabe station because there is only a few buses depart from Shirahama station.
It takes about 1 hour 40 minutes from Tokyo station to Nagoya station, costs 10,360JPY. Wide View Nanki is the best way to go to Shingu station from Nagoya station. It takes about 3 hours 30 minutes, 6,870JPY. Nanki/Kumano Kodo Free Ticket mentioned as below is the cheapest way if you plan to spend in Yunomine for 3 days.
Night buses are available between Omiya, Ikebukuro, Shinjuku, Yokohama to Shingu station. It takes about 9 hours 30 minutes, costs 10,000JPY from Shinjuku to Shingu station. There are also buses to Tanabe station available. How to access Shingu station to Yunomine Onsen by bus. It takes 1 hour 10 minnutes, costs 1,540JPY. Here is the details of the nigtht bus from Tokyo to Shingu station. .
It takes about 30 minutes, costs 560JPY from Kyoto station to Shin-Osaka station. From Shin-Osaka station, Limited Express Train "Kuroshio" brings you to Kii-Tanabe station. It takes about 2 hours 10 minutes, costs 4,750JPY. How to access Kii-Tanabe station to Yunomine Onsen by bus.
Take Kansaikuko Line Kanku-Rapid (for Kyobashi) at Kansai Airport station, get off at Hineno station and change for Limited Express Train "Kuroshio". Kuroshio brings you to Kii-Tanabe station. It takes about 2 hours 2 minutes, cost 3,890JPY. How to access Kii-Tanabe station to Yunomine Onsen by bus.
Highway buses are available between Kyoto, Osaka, Rinku-Town station. (one station away from Kansai Airport station) to Kii-Tanabe station. It take about 3 hours 30 minutes, costs 3,300JPY from Kyoto station. It takes about 3 hors 20 minutes, costs 2,880JPY from JR Osaka station. It takes about 2 hours 10 minutes, costs 2,580JPY from Rinku-Town station.
Depart from Kyoto station
Depart from Osaka/Rinku-Town station
How to access Kii-Tanabe station to Yunomine Onsen by bus.
Official Site: Timetable for Kumano Kotsu Bus
Simplified Version: From Shingu Sta. to Yunomine Onsen and Hongu Taisha-mae
Simplified Version: Shingu to Yunomine Onsen
Simplified Version: Yamato-Yagi to Yunomine Onsen
It's a bargain bus ticket if you come to Yunomine Onsen, Hongu Shrine from Shingu station.
Adult: 3,000JPY, Child: 1,500JPY / Validity: 3 days includinig issuing date
e.g.) Shigu sta.Yunomine Onsen, Yunomine OnsenHongu Shrine, Yunomine OnsenSingu sta. costs 3,680JPY.
Avilable at Shingu station (8:30-16:00), Katsuura station (8:00-17:00)
It's a great deal train and bus ticket if you come to Yunomine Onsen, Hongu Shrine from Nagoya station. The fare is different according to the boarding section.
From Nagoya station, Adult: 9,780JPY, Child: 4,890JPY / Validity: 3 days (except for 27 April to 6th May, 11 to 20 August, 28 December to 6 January)
e.g.) Nagoya sta.Shingu sta.＝Wide View Nanki 6,780JPY, Shingu sta.Yunomine Onsen, Hongu Shrine＝3,680JPY, Shingu sta.Nagoya sta.＝6,780JPY, total 17,240JPY.
*You must be a foreign tourist visiting Japan from abroad for sightseeing, with an entry status of "Short-term Stay". This pass is not available for purchase in Japan. Please purchase an MCO (Exchange Order) before leaving for Japan.
Non-reserved seating on JR, Ise Tetsudo limited express, express, rapid, and local trains between Nagoya station – within Osaka City (Kansai line: Kisei line: Hanwa line), Hineno station – Kansai-airport station (Kansai Airport line), Taki station - Toba station (Sangu line), Kameyama station - within Osaka City (Kansai line), Kizu station - within Osaka City (Katamachi line), Kyuhoji station - within Osaka City (Osaka Higashi line), Otori station - Higashi-Hagoromo station (Hanwa line), Wakayama station - Wakayamashi station (Kisei line), Kawarada station - Tsu station (Ise Railway) and Kumano Kotsu Buses: Katsuura station － Nachisan, Shingu station － Hongu Taisha-front, Shingu station － Koguchi are available.
Adult: 11,000JPY, Child: 5,500JPY / Validity: 5 consecutive days
Yunomine Onsen is located in between Akagi-goe and Dainichi-goe on Nakahechi route "The Imperial Route to Kumano" of Kumano Kodo pilgrimage network. The Dainichi-goe route is a short (3.5 km/2.17 miles) but relatively steep trail over Mt. Dainichi that links Kumano Hongu Taisha with Yunomine Onsen. It takes about 90~120 minutes including breaks.
J-Hoppers Kumano Yunomine Latitude: 33.829662; Longitude: 135.758196